— Technology we master

Cosmos

The stack to build your own sovereign, interoperable-by-default blockchain.

Cosmos is an ecosystem of frameworks (Cosmos SDK, the CometBFT/Tendermint BFT consensus engine) for building application-specific blockchains (app-chains) instead of a single smart contract on a shared chain. The IBC protocol links those chains to exchange tokens and data with cryptographic verification. Choose it when you need a dedicated, sovereign, fully customizable chain without the congestion and fees of a mutualized one.

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[ Why Cosmos ]

What Cosmos brings to your project.

Typical use cases: Launch a dedicated app-chain (DeFi, gaming, RWA), interoperable via IBC.

01
Modular Cosmos SDK: purpose-built app-chain in Go.
02
CometBFT (Tendermint) BFT consensus with instant finality.
03
IBC: native interoperability across the ecosystem's chains.
04
Full sovereignty: own governance, validators and tokenomics.

[ Team ]

Entrust your project
to our experts.

Entrust your project to our
experts.

Entrust your project
to our experts.

Our experts build your project, delivering superior technical and functional quality within shorter timeframes.

Engineers, developers and designers, experts in their fields.

100+

Solutions built by Kosmos since 2018.

78%

Of loyal clients ready to continue their project with Kosmos.

FRANCE

Paris, Lyon, Marseille, Nice, Geneva and across France.

Experts

100+

Projects delivered

78%

Loyal clients

4.9/5

Average rating

[ 200+ Projects ]

They trust us.

They trust
us.

Startups, mid-caps, large enterprises, public sector: Kosmos supports organisations of every size in building their web, mobile and AI applications.

[ Press ]

They talk about us.

Explore the mentions and analyses that spotlight our work and our innovations across the business and tech press.

Free quote · no commitment

A project with Cosmos?

Describe your project. Our team replies within 24 hours with free technical scoping, along with a clear estimate of costs and timelines. No commitment.

Reply within 24 hours from a project manager
or engineer.Reply within 24 hours from a project manager or engineer.
Technical scoping and quote, with no fees.
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confidential.No commitment, your data stays confidential.